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 Go to latest Published: Jul 13, 2022 License: Apache-2.0 Imports: 4 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Argument 

type Argument interface {
	fmt.Stringer
	// contains filtered or unexported methods
}

Argument represents a statement argument (see Statement). 

Argument = AssignmentsArgument
         | BinaryOpArgument
         | ConstantsArgument
         | CumulativeArgument
         | DomainArgument
         | ElementArgument
         | ImplicationArgument
         | IntervalsArgument
         | KArgument
         | LinearEqualityArgument
         | LinearExprsArgument
         | NonOverlapping2DArgument
         | VariableEqualityArgument
         | VariablesArgument .

type AssignmentsArgument 

type AssignmentsArgument struct {
	Variables []string
	In        bool

	AllowedLiteralAssignments [][]bool // either-or
	AllowedIntVarAssignments  [][]int
}

AssignmentsArgument represents an assignment argument: [a,b] ∉ [0,0] ∪ [1,1]. It's used to test New{Allowed,Forbidden}{,Literal}AssignmentsConstraint. 

AssignmentsArgument = "[" Variables "]" ( "∈" | "∉" ) ( NumbersList | BooleanList ) .

func (*AssignmentsArgument) AsInt64s 

func (a *AssignmentsArgument) AsInt64s() [][]int64

AsInt64s converts the underlying assignments int matrix to a matrix of int64s.

func (*AssignmentsArgument) ForIntVars 

func (a *AssignmentsArgument) ForIntVars() bool

ForIntVars returns true iff this argument refers to int vars.

func (*AssignmentsArgument) ForLiterals 

func (a *AssignmentsArgument) ForLiterals() bool

ForLiterals returns true iff this argument refers to literals.

func (*AssignmentsArgument) String 

func (a *AssignmentsArgument) String() string

type BinaryOpArgument 

type BinaryOpArgument struct {
	Left, Right, Op, Target string
}

BinaryOpArgument represents a binary operation argument: a * b == c. It's used to test New{Product,Division,Modulo}Constraint. 

BinaryOpArgument = Identifier ( "/" | "%" | "*" ) Identifier "==" Identifier .

func (*BinaryOpArgument) String 

func (b *BinaryOpArgument) String() string

type ConstantsArgument 

type ConstantsArgument struct {
	Variables []string
	Constant  int
}

ConstantsArgument represents a constants argument: a, b to c == 42. It's used to test NewConstant. 

ConstantsArgument = Variables "==" Number .

func (*ConstantsArgument) String 

func (c *ConstantsArgument) String() string

type CumulativeArgument 

type CumulativeArgument struct {
	IntervalDemands []*IntervalDemand
	Capacity        string
}

CumulativeArgument represents a cumulative argument: i:2, j:4 | C. It's used to test NewCumulativeConstraint. 

CumulativeArgument = IntervalDemands "|" Identifier .

func (*CumulativeArgument) Demands 

func (c *CumulativeArgument) Demands() []string

Demands is a helper method that returns a slice of the underlying demands.

func (*CumulativeArgument) Intervals 

func (c *CumulativeArgument) Intervals() []string

Intervals is a helper method that returns a slice of the underlying interval names.

func (*CumulativeArgument) String 

func (c *CumulativeArgument) String() string

type Domain 

type Domain struct {
	LowerBound, UpperBound int
}

Domain represents a unit domain. 

Domain         = "[" Number "," Number "]" .

func (*Domain) String 

func (d *Domain) String() string

type DomainArgument 

type DomainArgument struct {
	Variables   []string // either-or
	LinearExprs []*LinearExpr

	Domains []*Domain
}

DomainArgument represents a domain argument: a, b to d in [0, 2]. It's used to test New{IntVar,LinearExpr}. 

DomainArgument = ( Variables | LinearExprsMethod ) "in" Domains .

func (*DomainArgument) AsSolverDomain 

func (d *DomainArgument) AsSolverDomain() solver.Domain

func (*DomainArgument) String 

func (d *DomainArgument) String() string

type ElementArgument 

type ElementArgument struct {
	Target, Index string
	Variables     []string
}

ElementArgument represents an element argument: t == [a,b,c][i]. It's used to test NewElementConstraint. 

ElementArgument = Identifier "==" "[" Variables "]" "[" Identifier "]" .

func (*ElementArgument) String 

func (e *ElementArgument) String() string

type Enforcement 

type Enforcement struct {
	Literals []string
}

Enforcement represents the enforcement clause (see Statement). 

Enforcement = "if" Variables .

func (*Enforcement) String 

func (e *Enforcement) String() string

type ImplicationArgument 

type ImplicationArgument struct {
	Left, Right string
}

ImplicationArgument represents an implication argument: a → b. It's used to test NewImplicationConstraint. 

ImplicationArgument = Identifier "→" Identifier .

func (*ImplicationArgument) String 

func (i *ImplicationArgument) String() string

type Interval 

type Interval struct {
	Name, Start, End, Size string // variables
}

Interval represents a single interval. 

Interval       = Identifier "as" "[" Identifier "," Identifier "|" Identifier "]" .

func (*Interval) String 

func (i *Interval) String() string

type IntervalDemand 

type IntervalDemand struct {
	Name   string
	Demand string
}

IntervalDemand represents an interval identifier and it's corresponding demand. 

IntervalDemand = Identifier ":" Identifier .

func (*IntervalDemand) String 

func (i *IntervalDemand) String() string

type IntervalsArgument 

type IntervalsArgument struct {
	Intervals []*Interval
}

IntervalsArgument represents an intervals argument: i as [s, e| sz] It's used to test NewInterval. 

IntervalsArgument = Intervals .

func (*IntervalsArgument) String 

func (i *IntervalsArgument) String() string

type KArgument 

type KArgument struct {
	Literals []string
	K        int
}

KArgument represents a k-argument: a, b to f | 4. It's used to test New{AtLeast,AtMost,Exactly}KConstraint. 

KArgument = Variables "|" Digits .

func (*KArgument) String 

func (k *KArgument) String() string

type LinearEqualityArgument 

type LinearEqualityArgument struct {
	Target *LinearExpr
	Exprs  []*LinearExpr
	Op     string
}

LinearEqualityArgument represents a linear expression equality argument: 2j == max(k+i, i+2f). It's used to test NewLinear{Maximum,Minimum}Constraint 

LinearEqualityArgument   = LinearExpr "==" ( "max" | "min" ) "(" LinearExprsMethod ")" .

func (*LinearEqualityArgument) String 

func (l *LinearEqualityArgument) String() string

type LinearExpr 

type LinearExpr struct {
	LinearTerms []*LinearTerm
}

LinearExpr represents a linear expression. 

LinearExpr     = [ "-" ] LinearTerm { ( "+" | "-" ) LinearTerm } | "Σ" "(" Variables ")" .

func (*LinearExpr) String 

func (l *LinearExpr) String() string

type LinearExprsArgument 

type LinearExprsArgument struct {
	Exprs []*LinearExpr
}

LinearExprsArgument represents an argument comprised of linear expressions. 

LinearExprsArgument = LinearExprsMethod .

func (*LinearExprsArgument) String 

func (l *LinearExprsArgument) String() string

type LinearTerm 

type LinearTerm struct {
	Coefficient int
	Variable    string
}

LinearTerm represents an individual term in a linear expression (see LinearExpr). If the embedded variable is the empty string, the term is a just a constant. 

LinearTerm     = { Digits } Identifier | Digits .

func (*LinearTerm) String 

func (l *LinearTerm) String() string

type Method 

type Method int
const (
	Unrecognized Method = 0

	AllDifferentMethod Method = iota + 128
	AllSameMethod
	AssignmentsMethod
	AtLeastKMethod
	AtMostKMethod
	BinaryOpMethod
	BooleanAndMethod
	BooleanOrMethod
	BooleanXorMethod
	BoolsMethod
	ConstantsMethod
	CumulativeMethod
	ElementMethod
	EqualityMethod
	ExactlyKMethod
	ImplicationMethod
	IntervalsMethod
	LinearExprsMethod
	LiteralsMethod
	MaximizeMethod
	MinimizeMethod
	NameMethod
	NonOverlappingMethod
	NonOverlapping2DMethod
	ObjectiveValueMethod
	PrintMethod
	SolveMethod
	SolveAllMethod
	ValidateMethod
	ValuesMethod
	VarsMethod
)

func LookupMethod 

func LookupMethod(s string) (Method, bool)

func (Method) String 

func (m Method) String() string

type NonOverlapping2DArgument 

type NonOverlapping2DArgument struct {
	XVariables, YVariables    []string
	BoxesWithNoAreaCanOverlap bool
}

NonOverlapping2DArgument represents an argument x and y interval variables, and a boolean indicating whether or not zero area boxes can overlap: [i, j], [k, l], false. It's used to test NewNonOverlapping2DConstraint. 

NonOverlapping2DArgument = "[" Variables "]" "," "[" Variables "]" "," Boolean .

func (*NonOverlapping2DArgument) String 

func (n *NonOverlapping2DArgument) String() string

type Statement 

type Statement struct {
	Receiver    string
	Method      Method
	Argument    Argument
	Enforcement *Enforcement
}

Statement represents a single statement. 

Statement   = Receiver "." Method "(" [ Argument ] ")" [ Enforcement ] .

func (*Statement) String 

func (s *Statement) String() string

type VariableEqualityArgument 

type VariableEqualityArgument struct {
	Target    string
	Variables []string
	Op        string
}

VariableEqualityArgument represents a variable equality argument: j == min(k, i, f). It's used to test New{Minimum,Maximum}Constraint. 

VariableEqualityArgument = Identifier "==" ( "max" | "min" ) "(" Variables ")" .

func (*VariableEqualityArgument) String 

func (v *VariableEqualityArgument) String() string

type VariablesArgument 

type VariablesArgument struct {
	Variables []string
}

VariablesArgument represents an argument comprised of variables. 

VariablesArgument        = Variables .

func (*VariablesArgument) AsLinearExprsArgument 

func (v *VariablesArgument) AsLinearExprsArgument() *LinearExprsArgument

AsLinearExprsArgument returns a LinearExprsArgument representation of the VariablesArgument.

func (*VariablesArgument) String 

func (v *VariablesArgument) String() string

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